description = [[
Lists modules available for rsync (remote file sync) synchronization.
]]

---
-- @usage
-- nmap -p 873 --script rsync-list-modules <ip>
--
-- @output
-- PORT    STATE SERVICE
-- 873/tcp open  rsync
-- | rsync-list-modules: 
-- |   www            	www directory
-- |   log            	log directory
-- |_  etc            	etc directory
--

require 'rsync'
require 'shortport'

author = "Patrik Karlsson"
license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
categories = {"discovery", "safe"}

portrule = shortport.port_or_service(873, "rsync", "tcp")

action = function(host, port)
	local helper = rsync.Helper:new(host, port, { module = "" })
	if ( not(helper) ) then
		return "\n  ERROR: Failed to create rsync.Helper"
	end
	
	local status, err = helper:connect()
	if ( not(status) ) then
		return "\n  ERROR: Failed to connect to rsync server"
	end
	
	local modules = {}
	status, modules = helper:listModules()
	if ( not(status) ) then
		return "\n  ERROR: Failed to retrieve a list of modules"
	end
	return stdnse.format_output(true, modules)
end